package oopadvance.exercise;

public class Test {

    public static void main(String[] args) {

        Singer zhouDong = new PopSinger("周杰伦");
        Singer song = new NationSinger("宋祖英");
        Singer mao = new ArtSinger("毛阿敏");
        Customer c = new Customer();
        c.listenMusic(zhouDong,"传奇");
        c.listenMusic(song,"传奇");
        c.listenMusic(mao,"传奇");
    }
}
